The Uwell Crown 4 tank and kits that include this tank are compatible with the Uwell Crown 4 replacement coils. This coil comes in four different variations, all of which are intended for sub-ohm vaping. It is advised to use these coils with e-liquid that has at least 70% vegetable glycerin.
Using stainless steel (SS904L) instead of regular Kanthal, the 0.2- and 0.4-ohm coils heat up more quickly and provide more flavor and clouds. The ideal operating ranges for 0.2- and 0.4-ohm coils are 70 to 80 W and 60 to 70 W, respectively.